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I've invented a 100% efficient combustion engine
(aussie.zone)
A place for majestic STEMLORD peacocking, as well as memes about the realities of working in a lab.
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Don't tell anyone, but I actually only used 1 significant figure, so anything above 50% will do.
I'm also using the version of significant figures where I work backwards from the answer, otherwise I'd need 95% or higher and that's too difficult.